US2226377A - Crayon - Google Patents

Crayon Download PDF

Info

Publication number
US2226377A
US2226377A US252622A US25262239A US2226377A US 2226377 A US2226377 A US 2226377A US 252622 A US252622 A US 252622A US 25262239 A US25262239 A US 25262239A US 2226377 A US2226377 A US 2226377A
Authority
US
United States
Prior art keywords
crayon
charcoal
pulverized
magnesia
silicate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US252622A
Inventor
Coleridge W Hart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US252622A priority Critical patent/US2226377A/en
Application granted granted Critical
Publication of US2226377A publication Critical patent/US2226377A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D13/00—Pencil-leads; Crayon compositions; Chalk compositions

Definitions

  • a further object is to produce a crayon with its surface hard enough not to soil the fingers, but only so hard as to wear away from the point as it is being used.
  • Figure 1 is a lengthwise section through a crayon which embodies this invention.
  • Figure 2 is a transverse section.
  • Wood charcoal either activated or unactivated, and nely pulverized, is the major ingredient. This is combined in the proportion by weight of six parts of charcoal and one of silicate of magnesia, suitably pulverized soapstone. To make this compactable, there is added one part by weight of adhesive material, as gum arabic dissolved in Water. Other adhesives, as vgum tragacanth, paste, starch, or glue, may be substituted or used in part. These ingredients are thoroughly mixed to a nearly dry paste, and are (Cl. 10G-5) next molded or extruded under pressure to the desired form, removed from the mold and dried.
  • the quantity of charcoal may be varied ten per centum either Way and the quantity of silicate of magnesia ve per centum either way, depending on the desired texture and the purpose for which the crayon is to be used.
  • the interior body c of the crayon remains with the mixture as above given, but, in order not to soil the lingers at and close to the surface s, it is made 10 a little or much harder than the rest. This is effected by dipping or spraying for one second or more in or with a hardner, such as a mixture of one part of molasses, one part of gum arabic or gum tragacanth, and ve parts of water. Due to the absorbent property of the charcoal and the brief period during which it is dipped, this hardner penetrates to but a slight depth.
  • a crayon comprising a compacted mixture of nely pulverized charcoal, pulverized silicate 'of magnesia, and a binder of adhesive material,
  • a crayon comprising a compacted mixture 25 of finely pulverized charcoal, pulverized soapstone, and a binder of gum arabic, the charcoal being largely in excess of the other ingredients.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Description

C. W. HART CRAYON Dec. 24, 1940;
Filed Jan. 24, 1959 Patented Dec. 24, 1940 UNIT-ED STATES PATENT OFFICE .CRAYON Coleridge W. Hart, Peekskill, N. Y.
Application January 24, 1939, Serial No. 252,622
2 Claims.
or medium hard as may be desired. A further object is to produce a crayon with its surface hard enough not to soil the fingers, but only so hard as to wear away from the point as it is being used.
In the accompanying sheet of drawings which forms a part of this description:
Figure 1 is a lengthwise section through a crayon which embodies this invention.
Figure 2 is a transverse section.
Wood charcoal, either activated or unactivated, and nely pulverized, is the major ingredient. This is combined in the proportion by weight of six parts of charcoal and one of silicate of magnesia, suitably pulverized soapstone. To make this compactable, there is added one part by weight of adhesive material, as gum arabic dissolved in Water. Other adhesives, as vgum tragacanth, paste, starch, or glue, may be substituted or used in part. These ingredients are thoroughly mixed to a nearly dry paste, and are (Cl. 10G-5) next molded or extruded under pressure to the desired form, removed from the mold and dried. The quantity of charcoal may be varied ten per centum either Way and the quantity of silicate of magnesia ve per centum either way, depending on the desired texture and the purpose for which the crayon is to be used. The interior body c of the crayon remains with the mixture as above given, but, in order not to soil the lingers at and close to the surface s, it is made 10 a little or much harder than the rest. This is effected by dipping or spraying for one second or more in or with a hardner, such as a mixture of one part of molasses, one part of gum arabic or gum tragacanth, and ve parts of water. Due to the absorbent property of the charcoal and the brief period during which it is dipped, this hardner penetrates to but a slight depth.
I claim:
1. A crayon comprising a compacted mixture of nely pulverized charcoal, pulverized silicate 'of magnesia, and a binder of adhesive material,
the charcoal being largely in excess of the other ingredients.
2. A crayon comprising a compacted mixture 25 of finely pulverized charcoal, pulverized soapstone, and a binder of gum arabic, the charcoal being largely in excess of the other ingredients.
US252622A 1939-01-24 1939-01-24 Crayon Expired - Lifetime US2226377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US252622A US2226377A (en) 1939-01-24 1939-01-24 Crayon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US252622A US2226377A (en) 1939-01-24 1939-01-24 Crayon

Publications (1)

Publication Number Publication Date
US2226377A true US2226377A (en) 1940-12-24

Family

ID=22956813

Family Applications (1)

Application Number Title Priority Date Filing Date
US252622A Expired - Lifetime US2226377A (en) 1939-01-24 1939-01-24 Crayon

Country Status (1)

Country Link
US (1) US2226377A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421246A (en) * 1942-02-06 1947-05-27 David Roger Harry Coated shoe polish stick and method of coating same
US4421128A (en) * 1975-07-16 1983-12-20 L'oreal Compacted greaseless cosmetic stick and particularly stick of eye shadow

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421246A (en) * 1942-02-06 1947-05-27 David Roger Harry Coated shoe polish stick and method of coating same
US4421128A (en) * 1975-07-16 1983-12-20 L'oreal Compacted greaseless cosmetic stick and particularly stick of eye shadow

Similar Documents

Publication Publication Date Title
ES284308A1 (en) A procedure to manufacture tablets and other molded objects (Machine-translation by Google Translate, not legally binding)
US2226377A (en) Crayon
US2013584A (en) Process of making writing pencil leads
DK295985D0 (en) PRINT MATERIALS AND PROCEDURES FOR PRODUCING THEREOF
US1168831A (en) Process of molding a compressed fiber composition.
DE692556C (en) Process for the production of tropicalized pencil leads
DE373298C (en) Primer for sticking paper, wallpaper, fabric, etc. Like. On walls, plastering, etc. like
AT57969B (en) Process for the production of artificial marble from self-setting hydraulic mortars.
GB810978A (en) Improvements in or relating to coating compositions
US2315484A (en) Plaster bandage
US1832654A (en) Process for manufacturing rods from plastic materials
US2022507A (en) Poultice
US1920384A (en) Stove wick and its composition
US902653A (en) Core compound.
DE605650C (en) Method of making records
US2393222A (en) Rubberless flexible compositions and processes
DE908865C (en) Arrangement for the time delay of very short electrical impulses
DE406424C (en) Dry element with ring-shaped depolarization electrodes made of a mixture of manganese dioxide and graphite
GB494149A (en) Wax applicators and methods of making the same
US1958519A (en) Matrix
DE915578C (en) Process for the production of layered insulating materials, in particular mica-like materials, using a solvent-free adhesive
DE457303C (en) Process for the production of heat protection compounds
FR2388871A1 (en) Plaster of Paris compsn. for wall coatings - contg. cellulose derivs., with improved storage and frost resistance
US1902914A (en) Duplicating stencil
GB158460A (en) Improved silver-plating powder